Trolley-conductor support



B; HINES" ET AL TROLLEY CONDUCTOR SUPPORT Feb. 28, 1928. 1,660,873

Filed Feb. 14. 19,27

WITNESSES: INVEN TOR$ l9 B/rne Hmes and fbwa/u .Bchards ATTORNEY Patented Feb. 28, 1928.

UNITED starts PATENT 'O BIRNEY 11mm, or .WILKINLBBURG, arm mane N. fiiCfiARDS, or Pr'r'rsfiURG'I-I,

rmmsrtvama, Mons TO ING COMPANY, 11 UORPOBATION wnsrrnonousn ELECTRIC AND massacresor rank VXNIA.

TROLLEY-CONDUCTOB surroar.

Application filed February 14, 1927. Serial No. 167,942.

Our invention relates to supports for suspending trolley conductors from overhead structures and particularly to clamps for gripping and holding trolley conductors.

One of the objectsof our invention is to produce a device of the character specified which shall be simple, eflicient and easily installed. j

Another object of our invention is to provide an improved hanger to which a trolley conductor may be easily and quickly secured.

Another object of our invention is to provide an improvedhanger that may be easily and quickly manufactured and assembled without giving much attention to the close fitting of its various parts.

Our improved device comprises, in gen-' eral, two pivotally connected jaw members secured to a supporting stud, a clamping member for closing the clamping jaws, and a spring adapted to spread the clamping jaws apart against the closing action of the clamping member. a a

Our invention may best be understood by reference to the accompanying drawings, wherein Figure 1 is a View, in side elevation, of a trolley-conductor clamp embodyingour invention Fig. 2 is a View. in section, taken on the line IIII of Fig. 1;

Fig. 3 is a view, in section, taken on the line III-III of Fig. 1; and Fig. 4 is a plan view of the spring employed to effect the spreading of the clamping jaws.

Referring to the drawings, our improved trolley-conductor clamp comprises a air of clamping jaws l and 2 which are provided with a plurality of lips 3 and 4 that are adapted to grip a trolley conductor 5. The lips 3 and 4 have two groups of apertured lugs 6 on their sides that are adapted to be hinged together by means of. alined pins 7.

The clamping jaws are provided also with centrally located complementary recesses 8 and 9 which are adapted to receive an enlarged head 10 that is formed onthe lower end of a supporting stem 11. The supporting stem 11 has a screw-threaded socket 12 in its upper end, by means of which it may be easily secured to a supporting stud or rod (not shown).

The upper portion of the supporting stem 11 is also screw-threaded externally and is adapted to receive thereon a screw-threaded compression nut 13 which provided with an enlarged portion 14 on its lower end that is adapted tobear against extended li s 15 and 16 on the upper portions of the 0 amping jaws 1 and 2, respectively.

bent wire spring 17, of the form illustrated in Fig. 4, is located within the central complementary recesses 8 and 9 in the clamp ing jaws 1 and 2 and is so placed that its ,ends 18 and 19 bear against the inner walls of the clamping aws and tend to spread the clamping jaws apart.

In mounting the clamp in operative position, the clamping member 18 is screwed upwardly on the supporting stem 11, which has previously been mounted on a support ing stud or rod. With the clamping member 13 in its upper position, the spring 17 will resiliently hold the clamping aws apart so that a trolley conductor may be easily inserted between their lips 3 and 4 and be held there until the clamping member 13 is screwed downwardly on the supporting stem 11 a sufficient distance to cause the clamping jaws to move toward each other and grip the trolley conductor.

While we have shown only one form of spring for spreading apart the clamping aws any other suitable form of spring or resilient means may be employed, and the spring or resilient means may be connected to the jaws in many other ways without departing from the spirit and scope of our invention; and all such modifications and changes are intended to be covered by the 2. In a hanger for trolley conductors, the

' combination with a pair of clamping jaws,

a support therefor, and means for closing the jaws, of a spring adapted to spread the jaws apart.

3. In a hanger for trolley conductors, the combination with a pair of clamping jaws, a

- support therefor, and means for closing the jaws, of a spring located between the lower parts of the jaws and adapted to. spread 1 them apart.

4. In a hanger for trolley conductors, the

combination with a pair of pivotally connected clamping: aws, a support theretor, and means for closing the jaws, of a spring associated therewith and having its ends bearing upon the jaws to spread them apart.

In testimony whereof, we have hereunto subscribed our names this 9th day'oi' February, 1927.

- BIRNEY 'HINES.

HOWARD N. RICHARDS. 

